If an employer for any reporting period fails to make any report used for the purpose of determining the amount of contributions payable under chapters 42 — 44 of this title at the time and in the manner required by the regulations adopted as prescribed or if those reports when filed are incorrect or insufficient, and the employer fails to file a corrected or sufficient report within twenty (20) days after the director has required the correction by written notice, the director shall determine on the basis of that information as the director may be able to obtain, the amount of contributions due from the employer, and the director shall give written notice to the employer of the amount of contributions so determined. That determination shall finally and irrevocably fix the amount of contributions due unless the employer shall, within twenty (20) days after the giving of that notice, apply to the board of review for a hearing, or unless the director on his or her own volition reduces the amount.